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Finding the Fourth Proportional to 343,576.62, 515,565.90 and 143,880.24

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Solution

The fourth proportional to 343,576.62, 515,565.90 and 143,880.24 is: 215,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,576.62 : 515,565.90 = 143,880.24 : x
  2. Step 2: Convert to fraction form
    343,576.62/515,565.90 = 143,880.24/x
  3. Step 3: Cross multiply
    343,576.62x = 515,565.90 × 143,880.24
  4. Step 4: Simplify right side
    343,576.62x = 74,179,745,427.82
  5. Step 5: Solve for x
    x = 74,179,745,427.82/343,576.62
  6. Step 6: Final answer
    x = 215,904.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.